Fixed cppcheck macro error evaluation

cpr/ssl_ctx.cpp

@@ -17,6 +17,7 @@
 // This is for example the case on Ubuntu 20.04.
 // We try to include it if available to satisfy clang-tidy.
 // Ref: https://github.com/openssl/openssl/commit/50cd4768c6b89c757645f28519236bb989216f8d
+// cppcheck-suppress preprocessorErrorDirective
 #if __has_include(<openssl/types.h>)
 #include <openssl/types.h>
 #else